Hi, first of all congratulations, you did a very good work.My question is if I don't have the Alamode shield for raspberry, it's possible to use Arduino UNO, I have seen in new RPI CNC BOARD that just connect 10 pin from RPI, to RPI this pins are I2C and UART I think they are the principals.I have your cnc shield (the red one) but I don't have Alamode shield.Thanks, I hope your answer.Sorry for my English. :)